• Infrared and Laser Engineering
  • Vol. 44, Issue 6, 1832 (2015)
Wu A′ni1、*, Li Chenyu1, Zhou Qingli1, Liu Jianfeng1, Sun Huijuan2、3, Yang Zhou1, and Zhang Cunlin1
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
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    DOI: Cite this Article
    Wu A′ni, Li Chenyu, Zhou Qingli, Liu Jianfeng, Sun Huijuan, Yang Zhou, Zhang Cunlin. Influence of temperature on resonant properties in terahertz subwavelength metal structures[J]. Infrared and Laser Engineering, 2015, 44(6): 1832 Copy Citation Text show less

    Abstract

    By using terahertz time domain spectroscopy(THz-TDS), the transmission and resonance properties of terahertz subwavelength metal structures at different temperatures were studied. The transmission of "U"- and "E"-shaped structures decreased gradually with temperature increasing from 80 K to 380 K. Meanwhile, the low resonance frequency showed a slight red-shift. Through the study of temperature-dependent transmission spectra at resonance and non-resonance regions, the phenomenon of transmission decreasing was attributed to the increasing of carrier concentration in GaAs substrate. The weakened resonant strength originated from the resonate quench by temperature-generated carriers in substrate. The red-shift was due to the increase of refractive index. The investigation could provide some meaningful guides in pratical application of terahertz functional devices.
    Wu A′ni, Li Chenyu, Zhou Qingli, Liu Jianfeng, Sun Huijuan, Yang Zhou, Zhang Cunlin. Influence of temperature on resonant properties in terahertz subwavelength metal structures[J]. Infrared and Laser Engineering, 2015, 44(6): 1832
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